(a) Lawful extra care charges shall mean those charges allowed by the mayor of a city or local licensing authority, which may be by rule or regulation promulgated for extra care services rendered by a collateral loan broker. It is the duty of the collateral loan broker to perform those services and to take such care of pledged articles as is normally required of a pledged article of personal property; where, however, the collateral loan broker actually gives or renders extra care and assumes a risk beyond those normally rendered and assumed by a collateral loan broker, and a charge is made for such extra care, the collateral loan broker shall specifically call the pledgor's attention to the said charge at the time the loan is made, and no such charge or fee shall be allowed unless the pledgor shall sign an agreement, to pay such extra charge and the fee for such extra charge, as agreed upon shall be inserted on the face of the pawn ticket.

(b) The above-mentioned charges are intended to apply to those extra care services actually performed and rendered by a collateral loan broker in addition to the normal care required to be given by him, and, shall not be used as a substitute for or as a means of exacting additional charges from the pledgor in excess of the maximum interest rates provided for in section 46 of the General Business Law.